public DxPointAndColor(float x, float y, System.Windows.Media.Color color) : this(new Vector2(x, y), color.ToArgb())
 {
 }
 public DxPointAndColor(System.Windows.Point point, System.Windows.Media.Color color) : this(new Vector2((float)point.X, (float)point.Y), color.ToArgb())
 {
 }